Improvement in hydraulic organ-blowers



W. SfHRIVER.

HYDRAULIG OMAN BLOWER.

' afull, clear, and'exaet description ofthe same,

`tion.

' with a main cylinder and-its piston, an' auxily iary cylinder, and a.balanced'piston'.valve lor; set of'balancedpiston-valves, adaptedto work;

. cylinder, for the purpose offshit'ting its Vsaid piston valve or valves, and 'suitable mechanthe'rod'ofthe maiii'piston, whereby I'produce ,among other reasons, because the pressure, being balanced' on bjoth sides-ot the piston'- March- Be it knownthan, WALTER sumvua, or'

and I do hereby declare thatA thefollowiiigis reference being had to the a'ccompan'yingV drawing,`which form'sa part ofithijsl speciiica- This inventionconsi'sts in the combination,

back'and forth in saidf auxiliary cylinder,` vto eontrolthe'induction andeduction ot" water to v and from the lnain cylinder," and; a suitable, piston or set of pistons for shifting such-ibaL. anced piston valve or valve s,1ofj`a four-way cock for controlling 'the induction a'nd` educ-v tion ot' water to andj'rom thev said auxiliary ism for.connectingthe plugot' said-cockv with ani'achine which `isvery reliable anddurable,

valves controlling the yinduction andleduction oiwaterto and.A from .the main cylinder, the said valves are not'liable to stick fast,znor to grind away and beconieinefcient, like a'com'- mon slide-valve held' againstxits seat by the= enormous pressure of 'water' on'its back or outer side.

1n the accompanying drawing, Figure l is a side view of a hydraulic organ-blower embodying my invention. Fig. 2 is a central horizontal section of the same. Fig. 3 is a central transverse section through the valvebox thereof; and Fig. 4 is a longitudinal section ofthe valve-box, taken on the plane of the dotted line m as, Fig. 3.

A designates the main cylinder, and B its piston, both oi' which may be of the usual or any other suitable form or construction. C designates an auxiliary cylinder closed at both ends, and D D designate two ports leading from the said auxiliary cylinder to near the ends ot' the main cylinder A. E E designate specimen@ forming 'part of Letters Patent-No. 1284,80 Lfdadnqvemher 2c, 1376"; application' fnaV a3,1e75.h i-

chamber, Ecommunicating with anfindjuction-orifice, An eduction -Kori'ce`, gj,com municates with thev centralpo'r'tion ofthe auxiliary cylinderQ G G designate balanced v`Valve-pistons, oneV for each off the ports-E E', lsaid" pistons fitting inthe auxliaryfcylinder U21 I'n the example shown both, of these balanced valve-pistous are secured" to a single stem or rod, a, of` such length that, by coming in' contact'` with the' heads oft-he saideylinder, it'will prevent the balanced pistons from passing 'their' respective'A ports EE in' .an outward direction, andyet will' permit either to slide under' itsfrespectiveport toi close it, as' shown jini Fig, 2. HH designate' two pistons, vwhich 'are, respeetively, arranged on thestem or rod a, at"s uitable'distanees beyondr the balanced valve-pistonsGG'i. These pistons H Hfserve to move thespindlea,- with .its balancedvalvefpistons GGr, by water admitted from-th'eniain induction-oritice through the auxiliary ports K",'regulated by anauxiliary valve, J 3 :which valve willjbe more particularly describedhereafter.

, When one of the balancedfvalve-pistons' G G'iisi'n vposition to close its port Eror E', 'the other valvepiston andthe af'ljaceutl pistonj H or H/"difvide orj'partitiou oi'j within the cylin. der (3j a space throughwhich water may freely pass from the adjacent port v'E"0rE" tov the corresponding port Dj orDf, and 4enter/the kmain cylinder A.

- IJ designate a' four-way eockIv ,being the "shellv or barrel, an'dJthe plug thereof; The

shell or barrel I communicates with the ends v ofthe auxiliary cylinder C through two ports, K K, with the middle or eduction portion of such cylinder by a port, L, and with the induction-chamber F by a port, M.

The plug J ot' the cock has passages in two opposite sides, which, during the operation of the machine, alternately establish communication between the port M and one of the ports K K', and between the other of the ports K K and the port L, whereupon the induction of water to one end of the auxiliary cyliuder, and the eduetion of water from. the other end of such cylinder are effected, and the balanced piston-valves G Gr" shifted, as previously described.

ports leading to the auxiliary cylinder O, from N designates a rod or lever, arranged on `ing directly against its lever N. A

The `operation of his the stem of the-plug J. `0 designates a rod,

which is`connected `at oneend to theieverN,

and which, at a suitable distance therefrom, receives the end of a tappet-arm, P, Vsecured to the rod of the main piston B. Upon the rod O, at a suitable distance apart, there are two tappets, s s, which, inthe present "in` stance, are adjustable, and secured in place by set-screws, and as `the piston moves` back and forth the rod P strikes and shifts theV plug J of the four-way cock alternately in reverse directions.

ith tappets, for' shifting the plugJ by strikihydraulic Lblower.`

as follows: Water from the' service-pipe `enters the induction-chamber F, passes through Jj the port M to the' fourway cock .I 'J, and .thence, according to the position of Vthe plug I. into one or'the other of theports K K. Referring to Figs. 2 and 4, the water under` pressure tlowlsthroughtheport K'fand into the auxiliary cylinder, and exertspressureon rthe piston H'and simultaneously the exhaustwater in the opposite end of said cylinder is .permitt'edto escape vthrough the port lKinto the eduction-p'ortr L, vthe result ofuwhich "is that the balanced valve-pistons'G G' are shiftedto the left. (See Fig. 2.) The port E `is consequently closed, the port E opened, the incoming water is admitted through the port D tothe right end of the maincylinder, and .the waste water allowed to escape through AV port D tothe space between thetwo balanced piston-valves G G', and to the eduction orifice In moving to the left the piston kB reverses the .plug'l of the four-way' cock,- whereupon l water under pressure is admitted to theleftend Aof thecylinder- U, and. theexhaust water is al# lowed to escapefrotn the right end',`the balfanced piston-valves G -G A'are shifted to the f right, and the water underpressure flows into the left end: of the cylinder A, and the exhaust water flows out of the right end thereof into thewaste-pipe, andthe piston B is impelled to the right. --Inmoving to the rig'nt end the said pistonieverses the plug ofthe four-way cock, allowing water to en ter the auxiliary port K', and the operation is repeated.

It is obvious that the pressure is balanced on both sides of the Apis1 ;onvalves G G', and but `little power is'needed to move them; also that said piston-valves on this account are not liable to stick fast, nor to be ground away, so as to become inefficiei'lt,"like aHslide-valve, held against its seat by the great pressure of live water on its outer or back surface.

(The"mo`vement` of the 'balanced valve-pistons G G is retarded by the exhaust water, which said pistons expel .from the auxiliary cylinder at each stroke, and` therefore the induction of watertov the main cylinder .A is graduallycut oft, and all shock incident thereto isobviated, for which reason a comparatively noieeless, and otherwise ve'ry desirable, hydraulic organ-blower is produced. vIt will be observed that a communication is at all times opened from the main inductionjpipef to either the main "or auxiliarycylinder, so that the piston in one of these cylinders is in position tomove, and hence the engine will always stop with its ports in a proper position for itto s tart again.

` I will here remark'that the watermay enter through the orifice g, and escape through the orifice f; .and that in such case the operation of the machine will be the reverse of that before described.

What I claim` as invention, and desire to secure by Letters Patent,`is In a hydraulic organblower, the combina- `tion`of the balanced piston-valves G G( and pistons H H withtheauxiliary cylinder C,

Vfmain 'cylinder piston B, ports D D" and E E', four-way cock I J and thedescribed mechanism Vconnecting the plug I of said cock with the rod of the main piston` B, 'allconstrncted and arranged to operate substantially as herein shown and described.'

j .WALTEB'SHRIVEHR Witnessesz'." l `EDWIN H. BROWN,

' A. J. DE LAOY. 

